将属性获取器用作类的常量是一个好主意吗

Question

Since Python has no const type. I have some attributes in a class that I do not wish to be modified.

So is it a good idea to define the attributes as property and only give it a getter without a setter? If not what is the issue?

class Aclass:
    def __init__(self):
        # do some init

    @property
    def constA(self):
        return 'abc'

Many thanks.

J

Answer 1

From the docs

This [ @property ] makes it possible to create read-only properties easily using property() as a decorator.

Answer 2

There is nothing wrong with that. The conventional code looks like this:

class Aclass:
    def __init__(self):
        # the underscore implies that the attribute is private
        self._constA = 'abc'

    @property
    def constA(self):
        return self._constA